Climateby Month

Independence, MO weather in September

NOAA 1991-2020 normals and daily records · Independence all year

September in Independence: mild, with some rain. Highs 78°F, lows 57°F, rain on about 9 days. A good month for most outdoor plans.

Normal high
78°F
Normal low
57°F
Wet days
9
4.8 in total
Muggy days
8
dew point 65°F+

How September changes from start to finish

Normal values at the start and end of September
September 1September 30
Normal high83°F73°F
Normal low62°F52°F
Chance of a wet day29%28%
Sunrise / sunset6:46 am / 7:48 pm7:12 am / 7:02 pm
Daylight13.0 h11.8 h

Chance of a wet day: average for the first and last 7 days of the month. Times are local clock time (Central Time).

A typical September day

  1. 6 am63°Fdew point 57°F
  2. 9 am70°Fdew point 58°F
  3. Noon76°Fdew point 58°F
  4. 3 pm79°Fdew point 58°F
  5. 6 pm76°Fdew point 57°F
  6. 9 pm70°Fdew point 58°F

NOAA hourly normals (local standard time) from Kansas City Downtown Airport (10 mi away); average wind 8 mph; clear or few clouds in 72% of daytime hours, mostly cloudy or overcast in 23%.

What kind of days to expect

  • Comfortable dayshigh 65-80°F and dew point under 60°F10 of 30
  • Hot dayshigh 90°F or more3 of 30
  • Muggy daysdaily mean dew point 65°F or more8 of 30
  • Wet daysat least 0.01 in of rain or melted snow9 of 30
  • Notable rainat least 0.10 in6 of 30
  • Freezing nightslow 32°F or below0 of 30
  • Snow on the groundsnow depth 1 in or more0 of 30

Average days per September, counted from daily records for each year 1991-2020.

Rain in September

Normal precipitation is 4.8 in; a dry September brings about 2.9 in and a wet one about 6.2 in (25th and 75th percentiles). About 3 days bring half an inch or more, and about 1 an inch or more.

How September varies from year to year

  • Warmest September, 1991-20202019: average high 84°F
  • Coolest September1993: average high 73°F
  • Wettest September2010: 11.7 in
  • Driest September2002: 1.1 in
  • Highest reading103°F (September 3, 2000)
  • Lowest reading33°F (September 23, 1995)

From the station's daily records with NOAA quality flags removed; most recent date shown when a reading repeats.

September compared with August and October

AugustSeptemberOctober
Normal high86°F78°F67°F
Normal low66°F57°F45°F
Wet days999
Comfortable days31014
Daylight13.7 h12.4 h11.2 h

Highs change by -8°F from August and -11°F into October.

Nearby alternatives in September

How Independence ranks in September

  • Normal high217th warmest of 378 cities; 6th of 7 in Missouri
  • Wet days222nd driest of 378
  • Comfortable days155th most of 342

What to pack for Independence in September

  • A rain jacket or umbrella – rain on about 9 days

Heating and cooling

September has 63 heating degree days and 144 cooling degree days (base 65°F), 3% of the year's total heating and cooling demand.

Questions

How hot is Independence in September?

The normal high is 78°F and the normal low is 57°F. From 1991 to 2020 the hottest September reading was 103°F (September 3, 2000).

Does it rain a lot in Independence in September?

About 9 days in September have at least 0.01 in of precipitation, and the normal total is 4.8 in. The wettest September in 1991-2020 was in 2010 (11.7 in); the driest was in 2002 (1.1 in).

Is September a good time to visit Independence?

September ranks 4th of 12 months on our comfort score for Independence (60 out of 100). It has about 10 comfortable days and about 3 days at 90°F or hotter. The best months are April and May.

Where the numbers come from

  • Temperature, rain, snowfall, snow depth and frost dates: Independence (USC00234154), 2.4 mi SE of the city center, 985 ft (50 ft lower than the city). NOAA normals and daily records, 1991-2020.
  • Humidity and wind by hour and cloud cover: Kansas City Downtown Airport (USW00013988), 9.9 mi WNW of the city center, 742 ft (293 ft lower than the city). NOAA normals and daily records, 1991-2020.
  • Daily humidity and wind: C.r. Wheeler Downtown Arpt (724463-13988), 9.6 mi WNW of the city center, 742 ft (293 ft lower than the city). Hourly observations, 1991-2020.